02117nam a2200193 a 450000100080000000500110000800800410001910000240006024501490008426002380023330000140047152013400048565000090182565000110183465300260184565300190187170000150189070000180190520780022018-03-28       2017    bl uuuu     u00u1 u    #d1 aRODRIGUEZ, M. A. D.  aFusarium wilt of banana in Brazilbcurrent state and research advances at Embrapa towards sustainable disease management.h[electronic resource]  aFitosanidad, Havana, v. 21, n. especial, 2017. Edição dos resumos do VIII Seminario Científico Internacional de Sanidad Vegetal, Havana, 2017. Por la transición de la agricultura cubana hacia la sostenibilidad. Ref. Foc-05.c2017  ap. 25-26.  aFusarium wilt (FW) impairs banana production in large areas of Brazil, affecting mainly the most profitable cultivars: \'Maçã\' (Silk, AAB) and ‘Prata’ (Pomme, AAB). Plant nutrition is frequently associated with disease severity, but little is known about the banana-FW pathosystem in Brazil. In this work we samples 18 farms in four different production systems in SP. In each farm areas with low (FOC-) and high (FOC+) incidence of FW were selected for plant analysis. Lamina of the third leaf were sampled and analyzed for nutrient content. The main differences between FOC- and FOC+ areas were related to N, K and Ca contents. The most outstanding effect of FW on plant nutrition was the reduction of K and Ca. This might be explained by the fact K and Ca are highly linked to water transport and FW causes severe damages in the vascular system. Interestingly, a relative increase of N content was also observed in some FOC+ plants. This may be due to a concentration effect as a result of growth reduction caused by FW. Our data suggest FW triggers a feedback mechanism towards destabilization in banana. The significant reduction of Ca and K detected on infected plants and the documented role of these nutrients on plant resistance, open opportunities to better understand soil-based management strategies of FW in banana.  aMusa  aBanana  aIntegrated management  aPanama disease1 aHADDAD, F.1 aAMORIM, E. P.